Costello Windows Reviews 

Hi,they came the day that they said they would arrived on time did a very professional job would highly recommend them to anyone

I got a new front door fitted today by Costello Windows, and I’m absolutely delighted with it! From start to finish, the service was fantastic. James, the fitter, was extremely professional, friendly, and did an excellent job. The attention to detail was second to none. I would highly recommend Costello Windows.

Had a patio door replaced with french doors by Costello windows….they done a superb job. Very professional from day 1 a fantastic service was offered and great workmanship provided by James! 10/10!

I had a great after sale service with Costello windows. They came and fixed the lock on the door as it was getting stuck trying to open it. I was met with a very kind man, he arrived punctual and was very helpful and fixed the problem immediately. I would highly recommend this company to anyone changing their doors or windows.

Very happy with the service and advice for my new front door . I would happily recommend Costello Windows.

The installation team for Costello Windows were first class, very friendly and carry out their work quickly and efficiently. Im very happy with the end result of the work carried out

Recently had a front door fitted by Costello Windows and couldn’t be happier with the fit. The installation was done when they said it would with an accurate lead time and the actually fitting was second to none. The day it was replaced wasn’t good weather wise but the job was still done and the sealing was done during dry spells. The area was left hoovered and cleaned up, very professional finish. Again thanks very much for the service

I had to have a window replaced and whilst I had to wait a while for it as it was manufactured by another company, Amelie kept in constant touch with updates. Today the amazing John and his team arrived to remove the old one & fit the new one. The windows were extremely heavy and difficult to manoeuvre but it was completed without a hitch. As always exceptional workmanship from the nicest crew.

Since we had our windows installed in January 2022, we have had an ongoing problem with the metal fittings on the window frames: they have rusted badly. This affects in particular the small upper windows which are opened regularly.

Just to say that the follow-up service from Costellos has been excellent. They have recently replaced the rusty fittings and the fitter, John O'Sullivan, was very thorough, oiled and serviced all the windows and gave us good advice on how to maintain them in future.

Costello window and door repairs are so helpful, obliging and professional. from the moment you pick up the phone, Amelia is so thoughtful and caring. She will really help out with window repairs and give accurate details on when call out will be. The company is very prompt with dealing with any repairs. John was also so helpful on call out. I am so delighted with the windows that they repaired in my house. They have done a brilliant and professional job. The price was excellent. I would highly recommend Costellos. Thank you Amelia and John.
Claire mc Mahon

Ordered 7 windows from costellos found them very easy to deal with and very price competitive. Derry measured up and called after job was complete to check quality, couldn't be nicer. The lads installing willie and his helper were very nice and did a great job. It was a long day for them but they installed it all in 1 day. Would highly recommend!

Fantastic service from Costello Doors, serviceman called on schedule and his attention to fixing the issue was excellent . Delighted with my experience . Would definitely recommend them

Design was perfect and Brendan did an excellent job installing the door. Would highly recommend Costello Windows

Lovely job, great quality door and workmanship

Very happy with the refit done by Costello Windows. Replaced all existing old windows and doors. Both the product and workmanship was to a very high standard. Did a good tidy up after incl all the bits of replastering etc required. Thanks to John who oversaw the whole process, Justin for showing us around the showroom (on a Saturday) and finally Jerry and Jack the fitters who did a great job who explained everything as they went along. All very personable people to deal with. Would highly recommend.

Conor O’Regan

We had windows installed with costello windows recently,we were very happy with the service provided and especially how helpful fitters were and with how tidy everywhere was after .

Delighted with the high quality service provided by Costellos Windows and Doors.

From showroom to selecting the best design, to the fitters who competed
the whole house, windows and doors, they were very efficient and neat.

The whole process was seamless, and we are delighted with the results.
We would highly recommend Costellos.
Mike and Breda Woods.

We are very pleased with the way James fitted the doors. James work was professional and tidy.
Also thanks to Breeda for all her help and all the staff at Costellos.

Great product and service.
All left spotless

From start to finish Costello were excellent. John was great and showed us around the showroom, helped to select the best design and always at the end of the phone for any questions. The fitters were brilliant, even our builder was impressed and said he will use them again. And best of all - we love the windows! Thank you so much to all of you!